9. Find the smallest number by which the following must be divided to make it a perfect cube. And hence
estimate the cube root of the perfect cube so obtained.
(a) 725
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the required smallest number to be divided is 3. (ii) Prime factorization of 128, is: 128 = 2 × 2 × 2 × 2 × 2 × 2 × 2 = 23 × 23 × 2 Here, a number 2 is the smallest number by which 128 is divided to make it a perfect cube, i.e., 128 ÷ 2 = 64 which is a perfect cube.
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